MUNSER-KIEFER, M.; MARTSCHINKE, S.; LINDL, A.; HARTINGER, A. Development of Self-Concept in Multi-Grade 3rd and 4th Classes. International Electronic Journal of Elementary Education, [S. l.], v. 15, n. 4, p. 343–356, 2023. Disponível em: https://iejee.com/index.php/IEJEE/article/view/2010. Acesso em: 10 oct. 2024.